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美国波拉公司于五月八日在股东总会上发表了医用一步摄影系统。该系统由3种(黑白片、黑白幻灯片、彩色印片)画面尺寸为4×3英寸(10.16×7.62厘米)的自动显影方式的散页型一步胶片和专用的带有自动输送机构的相机后背组成。该系统
The United States Bola company on May 8 at the shareholders conference published medical one-step photography system. The system consists of a 3x (black and white film, black and white slideshow, color print) screen size of 4 × 3 inches (10.16 × 7.62 cm) automatic development of loose-leaf type one-step film and a dedicated camera with automatic delivery mechanism Back composition. The system